Triple

T2781280
Position Surface form Disambiguated ID Type / Status
Subject Frankfurt Hauptwache station E61699 entity
Predicate servedBy P82 FINISHED
Object U1 line
The U1 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with several northern suburbs.
 E297621 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: U1 line | Statement: [Frankfurt Hauptwache station, servedBy, U1 line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: U1 line
Context triple: [Frankfurt Hauptwache station, servedBy, U1 line]
  • A. U1 metro line
    The U1 metro line is one of Vienna’s main underground lines, running north–south through the city and connecting key districts and transport hubs.
  • B. U2 metro line
    The U2 metro line is one of Vienna’s rapid transit lines, running from the city’s outskirts through central districts and serving major venues and recreational areas.
  • C. Metro Line 1
    Metro Line 1 is a primary rapid transit route in its city's metro system, serving as a major corridor for passenger travel and interchanges with other lines.
  • D. Metro Line 4
    Metro Line 4 is a rapid transit route within a city's metro system that connects with other lines, including Metro Line 6, to facilitate passenger transfers across the network.
  • E. Metro Line 5
    Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: U1 line
Triple: [Frankfurt Hauptwache station, servedBy, U1 line]
Generated description
The U1 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with several northern suburbs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: U1 line
Target entity description: The U1 line is a route of the Frankfurt U-Bahn rapid transit system that connects central Frankfurt with several northern suburbs.
  • A. U1 metro line
    The U1 metro line is one of Vienna’s main underground lines, running north–south through the city and connecting key districts and transport hubs.
  • B. U2 metro line
    The U2 metro line is one of Vienna’s rapid transit lines, running from the city’s outskirts through central districts and serving major venues and recreational areas.
  • C. Metro Line 1
    Metro Line 1 is a primary rapid transit route in its city's metro system, serving as a major corridor for passenger travel and interchanges with other lines.
  • D. Metro Line 4
    Metro Line 4 is a rapid transit route within a city's metro system that connects with other lines, including Metro Line 6, to facilitate passenger transfers across the network.
  • E. Metro Line 5
    Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69ab4b7e43c48190997b8fc8fb1663ab completed March 6, 2026, 9:47 p.m.
NER Named-entity recognition batch_69abdd997ebc8190bff88fe549827615 completed March 7, 2026, 8:11 a.m.
NED1 Entity disambiguation (via context triple) batch_69afc05f4e7881908bf5b6f7df331041 completed March 10, 2026, 6:55 a.m.
NEDg Description generation batch_69afc1d3bec0819087bb787b7f570ddc completed March 10, 2026, 7:01 a.m.
NED2 Entity disambiguation (via description) batch_69afc229caf88190a26959c27e6a1a9e completed March 10, 2026, 7:03 a.m.
Created at: March 6, 2026, 9:57 p.m.